Van Prooijen, J.-W. (2011). Political paranoia: The social dimension of belief in conspiracy theories. Invited presentation for summer internship students; 25 August 2011, VU University Amsterdam, the Netherlands.

Van Prooijen, J.-W. (2002). The role of status in the psychology of procedural fairness: Knowing where we stand enhances reactions to fairness. Invited Colloquium, Tulane University, New Orleans, USA; and New York University, New York, USA.

Zwenk, F., & Van Prooijen, J.-W. (2004). We versus they: The role of group belongingness in the relation between situational uncertainty and procedural justice. Paper presented at the Xth ISJR conference, Regina, Canada.